A perennial plant; a plant that is active throughout the year or survives for more than two growing seasons.
Lasting or remaining active throughout the year, or all the time.
a perennial stream
(of a plant) Having a life cycle of more than two years.
Continuing without cessation or intermission; perpetual; never failing.
Enduring; lasting; timeless.
His artwork has a perennial beauty.
Recurrent; appearing or recurring again and again.
Change is a perennial theme in politics.